Results (
Vietnamese) 1:
[Copy]Copied!
2.2.2.5. Iron sulphide (FeS) and sulphide precipitation processes and SART. Waste barren bleed solution is treated by the addition of ferrous sulphide (FeS) to remove both free and complexed cyanides. Finely divided insoluble ferrous sulphide particles are prepared in the mill by reacting ferrous sulphate with sodium sulphide. The adsorption of cyanide on the FeS particles results in removal of cyanide. The reaction is strongly pH dependent and requires a pH of approximately 7.5 and a retention time of 15 min. The FeS to cyanide ratio is maintained at 3–1. Ferrous sulphate also removes arsenic which dissolves from the ore. The cyanide removal
Being translated, please wait..
